This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X450S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 450mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID32X450S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X450S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S
The AirTAC B04-SID32X450S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal (345 N at 0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the base SID32X450S; mechanically, every spec matches the standard cylinder exactly, including the 32 mm bore, G1/8 port, and M10x1.25 rod thread. This legacy model is discontinued and is fully replaced by the direct replacement SAID32X450S, which reuses the same ISO 15552 mounting interface, bore, stroke, and adjustable 27 mm cushions.
Because both faces use the identical rod-side area, the force is equal both ways (345/483/621 N at 0.5/0.7/0.9 MPa). The dual-rod design prevents piston rotation and allows the back rod to carry a sensor cam for -S magnet switches. The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X450S |
| Bore size | Ø32 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID32X450S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The B04-SAID32X450S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S Is Used
Excavator Panel Pusher
Equal both-ways force drives and retracts a panel alignment pusher on heavy equipment assembly lines without rotational drift.
Loader Linkage Gauge
The rear rod carries a sensor cam to track position on a loader linkage test rig, using the G1/8 port and compact 32 mm profile.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S with the B04-SAID32X450S
To replace the discontinued B04-SID32X450S, use the SAID32X450S. It is a direct: same 32 mm bore, 450 mm stroke, G1/8 port, and ISO 15552 mounting (Basic, FA, LB, TC). Size both ways by confirming the equal force (345 N at 0.5 MPa) handles your load; if more force is needed, step up to the 40 mm bore. Choose a double-rod cylinder when anti-rotation or a back-rod sensor cam is required. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. At 450 mm stroke, use external guides to prevent rod bending under side loads. For load holding, note that cushions only decelerate; use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X450S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X450S FAQ
Yes, the B04-SID32X450S is discontinued. The direct replacement is the SAID32X450S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SID32X450S, so all physical specs (32 mm bore, G1/8 port, M10x1.25 thread) are identical. The SAID32X450S reuses the same ISO 15552 mounting interface and adds an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 345 N at 0.5 MPa, 483 N at 0.7 MPa, and 621 N at 0.9 MPa. The air port is G1/8. Speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID32X450S
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